If the inhabitant of a temperate climate passes in turn through both extremes his advantage is plain, for although he may be changed as much as he who goes from one extreme to the other, he only removes half-way from his natural condition. A Frenchman can live in New Guinea or in Lapland, but a negro cannot live in Tornea nor a Samoyed in Benin. It seems also as if the brain were less perfectly organised in the two extremes. Neither the negroes nor the Laps are as wise as Europeans. So if I want my pupil to be a citizen of the world I will choose him in the temperate zone, in France for example, rather than elsewhere. In the north with its barren soil men devour much food, in the fertile south they eat little. This produces another difference: the one is industrious, the other contemplative. Society shows us, in one and the same spot, a similar difference between rich and poor. The one dwells in a fertile land, the other in a barren land. The poor man has no need of education. The education of his own station in life is forced upon him, he can have no other; the education received by the rich man from his own station is least fitted for himself and for society. Moreover, a natural education should fit a man for any position. Now it is more unreasonable to train a poor man for wealth than a rich man for poverty, for in proportion to their numbers more rich men are ruined and fewer poor men become rich. Let us choose our scholar among the rich; we shall at least have made another man; the poor may come to manhood without our help. For the same reason I should not be sorry if Emile came of a good family. He will be another victim snatched from prejudice. Emile is an orphan. No matter whether he has father or mother, having undertaken their duties I am invested with their rights. He must honour his parents, but he must obey me. That is my first and only condition. I must add that there is just one other point arising out of this; we must never be separated except by mutual consent. This clause is essential, and I would have tutor and scholar so inseparable that they should regard their fate as one. If once they perceive the time of their separation drawing near, the time which must make them strangers to one another, they become strangers then and there; each makes his own little world, and both of them being busy in thought with the time when they will no longer be together, they remain together against their will. The disciple regards his master as the badge and scourge of childhood, the master regards his scholar as a heavy burden which he longs to be rid of. Both are looking forward to the time when they will part, and as there is never any real affection between them, there will be scant vigilance on the one hand, and on the other scant obedience.